Linux 使用代理使网速变快

$ export http_proxy="http://USER:PASSWORD@PROXY_SERVER:PORT"
$ export https_proxy="https://USER:PASSWORD@PROXY_SERVER:PORT"
$ export ftp_proxy="http://USER:PASSWORD@PROXY_SERVER:PORT"

https://www.shellhacks.com/linux-proxy-server-settings-set-proxy-command-line/

https://www.cyberciti.biz/faq/linux-unix-set-proxy-environment-variable/